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Decompression devices for marine emergency breathing systems

A decompression device and breathing system technology, which is applied in the direction of respiratory protection devices, breathing filters, respiratory protection containers, etc., can solve the problems of limited adaptability, large space occupation, and difficulty in fully staffing, etc., to achieve The effect of small external environment influence, high reliability and compact structure

Active Publication Date: 2019-04-05
SHANGHAI MARINE EQUIP RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional emergency breathing mainly relies on oxygen cylinders, gas masks and other tools, which have limited adaptability to various special environments and take up a lot of space, making it difficult to equip all staff

Method used

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  • Decompression devices for marine emergency breathing systems
  • Decompression devices for marine emergency breathing systems
  • Decompression devices for marine emergency breathing systems

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Embodiment Construction

[0026] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0027] Such as figure 1 As shown, a decompression device used for the emergency breathing system in the cabin of a ship has two groups of valve groups, and the inlet and outlet ports of each group of valve groups pass through the filter element 7, the inlet shut-off valve assembly 43, and the pressure relief valve assembly in sequence. 44. The outlet cut-off valve assembly 45 is connected with each other. The pressure gauge 46 is installed on the inlet and outlet pipes of the pressure reducing valve assembly 44 , and the safety valve 22 is installed on the inlet pipe of the outlet cut-off valve assembly 45 .

[0028] The working principle of the decompression device: the inlet ends of the two groups of valve groups can be connected to an air pipeline separately, and each group of valve groups includes a filter 7, an inlet stop valve assembly 43...

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Abstract

The invention relates to a pressure reducing device for a ship compartment emergency breathing system. When compressed air in airbag chambers acts on membranes through damping holes in blank caps, the membranes are driven to push piston plates and ejector rods to move downwards, and the ejector rods break away from sealing seats to form throttling ports. When air media enter air inlet chambers of pressure reducing valves through inlet stop valves, the pressure of the air media changes under the throttling action of the throttling ports, the air media flow through connecting spiral plates and act on the piston plates to generate an upward acting force applied to the membranes, balance between the upward acting force and the pressure acting on the membranes by the airbag chambers is achieved, constant throttling openings are formed between convex cone platforms of the ejector rods and the sealing seats, and stable outlet pressure of the pressure reducing device is ensured. When ship crew cannot breath normally and cannot escape immediately due to air pollution in a ship compartment and other situations, an existing air system in the ship compartment is used for supplying air, and a pressure-stabilized input air source is provided for multiple rear-end devices to participate in the using process of the breathing system after being subjected to filtering and pressure reducing through the pressure reducing device.

Description

technical field [0001] The invention relates to a decompression device, especially a decompression device used for emergency breathing systems in ship cabins. Background technique [0002] During the voyage of the ship, there may be some special circumstances that affect the health and life safety of the crew. When the crew cannot escape immediately and need to perform necessary operations or wait for rescue, it is necessary to ensure that the crew can breathe normally to maintain their lives. Traditional emergency breathing mainly relies on oxygen cylinders, gas masks and other tools, which have limited adaptability to various special environments and take up a lot of space, making it difficult to equip all staff. [0003] When air pollution, environmental hazards, explosions, fires, flooding, and the spread of unknown substances occur in the cabin and the crew cannot breathe normally and cannot escape immediately, the air system with different pressure levels inherent on t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A62B9/02A62B23/02
CPCA62B9/022A62B23/02
Inventor 杨辉赵建斌闫念华唐勇孙晔
Owner SHANGHAI MARINE EQUIP RES INST
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